EL detection device for solar cell and its use method and production equipment

Abstract

The present invention relates to an EL detection device for a solar cell, a method for using the same and a production device. The detection device comprises a support frame, a bearing assembly, a first drive assembly, a transmission assembly, an electrical connection assembly, a second drive assembly, a clamping assembly and an optical assembly. The support frame has an input end and an output end arranged relatively to each other along a first direction. The bearing assembly is arranged to move relative to the support frame along a second direction. The first drive assembly is transmission-connected to the bearing assembly. The transmission assembly is arranged on the support frame. The electrical connection assembly is movably arranged relative to the bearing assembly. The second drive assembly is arranged on the bearing assembly and transmission-connected to the electrical connection assembly. The clamping assembly is arranged on the bearing assembly. The optical assembly is arranged on the support frame, and the optical assembly is configured to obtain an electroluminescent image of the solar cell. The detection device can improve the test efficiency of the electroluminescence of the solar cell.

Description

Technical Field

[0001] The invention belongs to the technical field of solar cell detection, and in particular relates to an EL detection device for a solar cell sheet, a use method and production equipment thereof. Background Art

[0002] Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. The mainstream is crystalline silicon solar cells that work with the photovoltaic effect. Before solar cells enter the market, they need to be tested for electroluminescence (EL) to test the electroluminescence state of the solar cells to obtain the electroluminescence image of the tested solar cells, so as to screen out defective products.

[0003] When testing the EL of existing solar cells, the location of the busbar must be determined according to the location of the lead-out node on the solar cell, and then fixed on the test platform. Then, the solar cell is turned over so that the film surface is facing down and placed on the test platform. Then, a DC power supply is connected, and the voltage and current upper limit values ​​required for the test are set. Then, a professional camera can be used for photo testing. This testing process has the following problems: ① Small-sized solar cells are easier to inspect, and flipping and aligning the electrodes are also easier. However, this inspection method is difficult to perform when the size is larger. The film surface of the solar cell is easily scratched during the flipping process, and large-sized solar cells may bend or even break during the handling process. ② The existing detection methods, because the camera equipment samples vertically downward, for thin-film batteries such as perovskite solar thin-film batteries, the battery cells are placed with the film surface facing downward, which can easily cause scratches on the film surface; ③Segment testing is often encountered in solar cell inspection, that is, a complete solar cell is divided into several small parts for separate testing to refine the defective area of ​​the battery and find the specific location. The existing inspection method can only achieve this process by adjusting the distance between the busbars. If the number of sub-cells in the test area is inconsistent each time, the distance between the busbars needs to be adjusted one by one to adapt, which reduces the efficiency of inspection; ④ After the mass production of perovskite solar cells, if EL spot testing of the components is required, the existing testing methods are difficult to carry out; ⑤ The size specifications of solar cells strictly restrict the object distance of conventional area array cameras. The use of wide-angle lenses cannot effectively solve the problem of the camera being hung too high, and the only option is to synthesize and stitch images.

[0004] Therefore, there is an urgent need to provide a detection device that can improve the test efficiency of electroluminescence of solar cells. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an EL detection device for solar cell sheets, a use method and a production device thereof, wherein the detection device can improve the test efficiency of electroluminescence of solar cell sheets.

[0006] In a first aspect, one or more embodiments of the present invention provide an EL detection device for a solar cell, comprising a support frame, a bearing assembly, a first drive assembly, a transmission assembly, an electrical connection assembly, a second drive assembly, a clamping assembly, and an optical assembly. The support frame has an input end and an output end arranged relative to each other along a first direction. The bearing assembly is arranged to move relative to the support frame along a second direction and is arranged to move relative to the support frame, wherein the first direction and the second direction intersect. The first drive assembly is transmission-connected to the bearing assembly. The transmission assembly is arranged on the support frame, and the transmission assembly is configured to drive the solar cell to be tested to move between the input end and the output end of the support frame. The electrical connection assembly is movably arranged relative to the bearing assembly, and the electrical connection assembly is configured to supply power to the solar cell to be tested so that the solar cell to be tested is electroluminescent. The second drive assembly is arranged on the bearing assembly and is transmission-connected to the electrical connection assembly. The clamping assembly is arranged on the bearing assembly, and the clamping assembly is configured to clamp the solar cell to be tested. The optical assembly is arranged on the support frame, and the optical assembly is configured to obtain an electroluminescent image of the solar cell to be tested.

[0007] In one or more embodiments of the present invention, the bearing assembly includes a first bearing component and a second bearing component, the first bearing component is movably connected to the support frame, and the second bearing component is arranged relative to the first bearing component along the second direction; the first driving assembly includes a first driving component and a first lifting component, the first driving component is arranged on the first bearing component to drive the first bearing component to drive the second bearing component to move relative to the support frame along the first direction, and the first lifting component is connected between the first bearing component and the second bearing component to drive the second bearing component to move along the second direction.

[0008] In one or more embodiments of the present invention, the support frame is provided with a guide rail, and the first bearing component is provided with a slide groove matched with the guide rail.

[0009] In one or more embodiments of the present invention, the second driving component includes a guide rod, a bracket and a second driving component, the guide rod is arranged on the second bearing component; the bracket is movably arranged on the guide rod and connected to the electrical connection component; the second driving component is connected to the bracket to drive the bracket to drive the electrical connection component to move along the axial direction of the guide rod.

[0010] In one or more embodiments of the present invention, the electrical connection assembly includes an electrical connection component and a buffer component, the electrical connection component is connected to the bracket, and the buffer component is disposed between the bracket and the electrical connection component.

[0011] In one or more embodiments of the present invention, the clamping assembly includes two first clamping parts and two second clamping parts, the two first clamping parts are arranged relative to the second bearing part along a direction perpendicular to the first direction; the two second clamping parts are arranged relative to the second bearing part along the first direction.

[0012] In one or more embodiments of the present invention, the transmission assembly includes a plurality of transmission shafts, a plurality of transmission wheel groups and a power component, wherein the plurality of transmission shafts are arranged on the support frame at intervals along the first direction; the plurality of transmission wheel groups are arranged one by one corresponding to the plurality of transmission shafts, the transmission wheel groups include a plurality of transmission wheels, and the plurality of transmission wheels are arranged on the transmission shaft at intervals. The power component is connected to the transmission shaft in a transmission manner.

[0013] In one or more embodiments of the present invention, the detection device further comprises a positioning assembly disposed on the support frame and located between two adjacent transmission wheel sets, and the positioning assembly comprises a first positioning component and a second positioning component disposed axially and oppositely to each other along the transmission shaft.

[0014] In one or more embodiments of the present invention, the optical assembly includes a camera and a reflector. The camera is movably disposed on a support frame. The reflector is spaced apart from the camera along a first direction, and the reflector is configured to change the direction of the electroluminescent light of the solar cell to be tested so that the light after the direction is changed by the reflector enters the field of view of the camera.

[0015] In a second aspect, an embodiment of the present invention provides a method for using the detection device of the first aspect, comprising the following steps: S100, inputting the serial number of the sub-cell of the solar cell to be tested, and the transmission component drives the electrical connection component to move to the corresponding sub-cell position according to the relevant program, and respectively corresponds to the positive and negative electrodes of the solar cell to be tested; S200, the solar cell to be tested stops moving after being transported to the target position by the conveying assembly, and the clamping assembly starts working to clamp the solar cell to be tested and return it to the center position. After the positioning is completed, the clamping assembly is in a standby position, waiting for the next work; S300, the second driving assembly starts to work, driving the second bearing component of the bearing assembly to move downward until the electrical connection assembly contacts the film surface of the solar cell to be tested, and then the second bearing component will move downward again until the second bearing component clamps the solar cell to be tested so that it does not slide; S400, after the clamping is ready, direct current is passed to the solar cell to be tested through the electrical connection assembly, and the first driving assembly drives the first bearing component of the bearing assembly to drive the second bearing component and the solar cell to be tested to move along the first direction, at which time the first bearing component and the transmission wheel will keep moving synchronously, and the fluorescence generated by the solar cell will be scanned and imaged by the optical assembly, and after the scanning of the solar cell is completed, the first bearing component stops moving after reaching the set position, and the transmission assembly will stop synchronously at this time; S500, all the clamping components are released, the solar cell is placed on the conveying component, the second bearing component moves upward, the electrical connection component is separated from the film surface of the solar cell to be tested, the conveying component operates again to transfer the solar cell, and the first bearing component returns to the standby position to wait for the next solar cell to be tested.

[0016] In a third aspect, an embodiment of the present invention provides a solar cell production device, comprising the detection device of the first aspect of the present invention.

[0017] Compared with the prior art, the EL detection device for solar cells of the present invention, its use method and production equipment have the following characteristics: In the detection device of the present invention, the support frame and the bearing assembly can provide good support for the driving assembly, the transmission assembly, the electrical connection assembly, the clamping assembly and the optical assembly. The transmission assembly can drive the solar cell to be tested to move between its input end and output end, and the first driving assembly can drive the bearing assembly to move relative to the support frame, so that the clamping assembly and the electrical connection assembly can be driven to move above the solar cell to be tested. The clamping assembly can clamp the solar cell to be tested, and the electrical connection assembly contacts the solar cell to be tested and electrically connects the positive and negative electrodes of the battery, so that the tested cell can be electroluminescent, and the optical assembly arranged on the support frame can obtain the above electroluminescent image. Due to the movable arrangement of the bearing assembly and the electrical connection assembly, the electroluminescent image of the sub-cell in any area of ​​the solar cell to be tested can be obtained, so that the defects of the cell can be reflected through the image. Therefore, the above detection device can improve the test efficiency of the electroluminescence of the solar cell.

[0018] In addition, the EL detection device for solar cells of the present invention, its use method and production equipment realize the batch and automation of EL testing, and meet the detection requirements of solar cells during large-scale production. While ensuring the detection requirements, the transmission structure of the equipment is kept consistent with the production equipment, which greatly reduces the types of spare parts and has strong compatibility. The EL test can clearly reflect the defects of solar cells, provide powerful detection means and accurate detection results when production is abnormal, ensure the yield rate of the product, and indirectly reduce production costs. In addition, the present invention can flexibly adjust the detection area of ​​the solar cell to be tested, and the defects on the solar cell can be finally refined to a certain sub-cell section, providing a basic guarantee for further high-precision detection and analysis.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, which can be implemented according to the content of the invention, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the detection device of the present invention; Figure 2 for Figure 1 Left view of Figure 3 for Figure 2 A schematic diagram of the structure of the middle support frame, the transmission assembly, the positioning assembly and the optical assembly; Figure 4 for Figure 2 A schematic structural diagram of the first bearing component; Figure 5 for Figure 2 A schematic structural diagram of the second bearing component, the second driving assembly, the clamping assembly and the electrical connection assembly; Figure 6 for Figure 2 Schematic diagram of the structure of the second drive component and the electrical connection component (partial).

[0021] Description of the accompanying drawings in the specific implementation manner: 10 detection device; 100 support frame; 110 guide rail; 200 bearing assembly; 210 first bearing component; 211 slideway; 220 second bearing component; 310 first lifting component; 400 transmission assembly; 410 transmission shaft; 420 transmission wheel assembly; 500 electrical connection assembly; 510 electrical connection component; 520 buffer component; 600 second driving assembly; 610 guide rod; 620 bracket; 630 second driving component; 700 clamping assembly; 710 first clamping member; 720 second clamping member; 800 optical component; 810 camera; 820 reflector; 910: first positioning component; 920: second positioning component. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the present invention, the solar cell comprises a plurality of sub-cell structures connected in series, wherein, taking the sub-cell as an example, it comprises an electron transport layer ETL (Electron Transporting Layer), a light-emitting layer and a hole transport layer HTL (Hole Transporting Layer), etc., and a metal layer is covered thereon to form a metal electrode. When any one or more of the plurality of sub-cells connected in series are defective, the battery may be damaged. Therefore, it is necessary to perform an electroluminescence test on the solar cell to obtain an image, through which the defects of the solar cell, such as material defects, sintering, process contamination, microcracks, line short circuits and the like, can be clearly observed, thereby screening out defective products with these defects.

[0024] However, in the related art, the test efficiency of the electroluminescence of solar cells is low, the film surface of the solar cells is easily damaged, and the structural layout is unreasonable. In view of this, the present invention provides an EL detection device for solar cells and a method for using and a production device thereof, which can improve the test efficiency of the electroluminescence of solar cells.

[0025] The preferred implementation of the EL detection device for solar cells according to the disclosure of the present invention is described in detail below with reference to the accompanying drawings.

[0026] First, please also refer to Figures 1 to 3 As shown, one or more embodiments of the present invention provide an EL detection device for a solar cell, wherein the detection device 10 includes a support frame 100, a bearing assembly 200, a first driving assembly (not shown in the figure), a transmission assembly 400, an electrical connection assembly 500, a second driving assembly 600, a clamping assembly 700 and an optical assembly 800.

[0027] The support frame 100 has an input end and an output end arranged relatively along a first direction. The bearing assembly 200 is arranged to move relative to the support frame 100 along a second direction, wherein the first direction and the second direction intersect. The first driving assembly is connected to the bearing assembly 200 in a transmission connection. The transmission assembly 400 is arranged on the support frame 100, and the transmission assembly 400 is configured to drive the solar cell A to be tested to move between the input end and the output end of the support frame 100. The electrical connection assembly 500 is arranged to move relative to the bearing assembly 200, and the electrical connection assembly 500 is configured to supply power to the solar cell A to be tested so that the solar cell A to be tested is electroluminescent. The second driving assembly 600 is arranged on the bearing assembly 200 and is connected to the electrical connection assembly 500 in a transmission connection. The clamping assembly 700 is arranged on the bearing assembly 200, and the clamping assembly 700 is configured to clamp the solar cell A. The optical assembly 800 is arranged on the support frame 100, and the optical assembly 800 is configured to obtain an electroluminescent image of the solar cell A to be tested.

[0028] In the present invention, the first direction refers to the horizontal direction, and the second direction refers to the vertical direction.

[0029] In the detection device 10 provided in the embodiment of the present invention, the support frame 100 and the bearing assembly 200 can provide good support for the driving assembly, the transmission assembly 400, the electrical connection assembly 500, the clamping assembly 700 and the optical assembly 800. The transmission assembly 400 can drive the solar cell A to be tested to move between its input end and output end, and the first driving assembly can drive the bearing assembly 200 to move relative to the support frame 100, so that the clamping assembly 700 and the electrical connection assembly 500 can be driven to move above the solar cell A to be tested, and the clamping assembly 700 can clamp the solar cell A to be tested, and the electrical connection assembly 500 contacts the solar cell A to be tested and electrically connects the positive and negative electrodes of the battery, so that the tested solar cell A can be electroluminescent, and the optical assembly 800 arranged on the support frame 100 can obtain the above-mentioned electroluminescent image. Due to the movable setting of the bearing assembly 200 and the electrical connection assembly 500, the electroluminescent image of the sub-cell in any area of ​​the solar cell A to be tested can be obtained, so that the defects of the battery can be reflected through the image. Therefore, the above detection device 10 can improve the test efficiency of the electroluminescence of the solar cell A.

[0030] In the above embodiment, the support frame 100 may include a first frame, a second frame, two first connecting frame bodies and two second connecting frame bodies, the first connecting frame body is horizontally connected between the first ends of the first frame and the second frame, the transmission component 400 is arranged between the first frame and the second frame, the two second connecting frame bodies are respectively connected to the second end of any one of the first frame and the second frame, and the two second connecting frame bodies are spaced apart and arranged relative to each other.

[0031] Please continue reading Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the supporting assembly 200 includes a first supporting component 210 and a second supporting component 220, the first supporting component 210 is movably connected to the supporting frame 100, and the second supporting component 220 is arranged relative to the first supporting component 210 along the second direction; the first driving assembly includes a first driving component and a first lifting component 310, the first driving component is arranged on the first supporting component 210 to drive the first supporting component 210 to drive the second supporting component 220 to move relative to the supporting frame 100 along the first direction, and the first lifting component 310 is connected between the first supporting component 210 and the second supporting component 220 to drive the second supporting component 220 to move along the second direction.

[0032] Specifically, the first bearing component 210 is connected to the second connecting frame, the second bearing component 220 is located between the first frame and the second frame, and the first driving component can drive the first bearing component 210 to drive the second performance component to move relative to the support frame 100 along the first direction, which can help accurately locate the detection area of ​​the solar cell A to be tested and improve the detection efficiency. In addition, the first lifting component 310 can drive the second bearing component 220 to rise and fall along the second direction, which can drive the electrical connection component 500 to be electrically connected to the detection area of ​​the solar cell A to be tested, thereby causing the sub-cells in the detection area to emit light.

[0033] In the above embodiment, the first driving component may include a first screw and a first motor, and the first motor is connected to the first screw via a coupling. To meet the requirements of precise positioning, the first bearing component 210 is provided with a threaded hole engaged with the first screw, so that the first motor can drive the screw to drive the first bearing component 210 and the second bearing component 220 to move along the first direction.

[0034] The first lifting component 310 may include a lifting cylinder, one end of which is fixed to the first bearing component 210 , and a piston shaft is connected to the second bearing component 220 .

[0035] In addition, in order to clearly observe the detection situation, a plurality of observation ports may be provided on the first supporting component 210 .

[0036] See also Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the support frame 100 is provided with a guide rail 110 , and the first bearing component 210 is provided with a slide groove 211 adapted to the guide rail 110 .

[0037] See also Figure 5 and Figure 6As shown, in some embodiments of the present invention, the second driving component 600 includes a guide rod 610, a bracket 620 and a second driving component 630, the guide rod 610 is arranged on the second bearing component 220, the bracket 620 is movably arranged on the guide rod 610 and is connected to the electrical connection component 500, and the second driving component 630 is connected to the bracket 620 to drive the bracket 620 to drive the electrical connection component 500 to move along the axial direction of the guide rod 610.

[0038] In the above embodiment, the second driving component 630 includes a second motor and a gear set, wherein the gear set includes a main gear and a driven gear, the main gear is connected to the output end of the second motor, and the driven gear is arranged in the bracket 620, so that the second motor can drive the bracket 620 to move along the axial direction of the guide rod 610 through the gear set.

[0039] In addition, the guide rod 610 may be a screw rod, and both ends of the screw rod may be fixed to the second bearing component 220 by fasteners.

[0040] See also Figure 6 As shown, in some embodiments of the present invention, the electrical connection assembly 500 includes an electrical connection component 510 and a buffer component 520 , the electrical connection component 510 is connected to the bracket 620 , and the buffer component 520 is disposed between the bracket 620 and the electrical connection component 510 .

[0041] It can be understood that there are usually two electrical connection components 510, corresponding to the positive and negative electrodes of the solar cell A respectively. Each electrical connection component 510 is connected to a bracket 620, and each bracket 620 is connected to a second motor and a gear set. The collision between the two brackets 620 can be reduced through motor control.

[0042] When the first lifting component 310 drives the second bearing component 220 to descend, the electrical connection component 510 will contact the film surface of the solar cell A to be tested, and the buffer component 520 can play a buffering role, so that the electrical connection component 510 and the solar cell A can be firmly connected to reduce the occurrence of poor contact. When the electrical connection component 510 is electrically connected to the positive and negative electrodes of the sub-cell in the solar cell A to be tested, the two electrical connection components 510 are respectively connected to the adjustable DC power supply through wires, and the upper limit values ​​of the output voltage and current are set before the detection can be started.

[0043] See also Figure 5 As shown, in some embodiments of the present invention, the clamping assembly 700 includes two first clamping parts 710 and two second clamping parts 720, the two first clamping parts 710 are arranged relative to the second supporting part 220 along a direction perpendicular to the first direction; the two second clamping parts 720 are arranged relative to the second supporting part 220 along the first direction.

[0044] In the above embodiment, the first clamping member 710 and the second clamping member 720 cooperate with each other to clamp the solar cell A in different directions so that it will not slide, thereby helping to improve the accuracy of detection.

[0045] Exemplarily, the first clamping member 710 and the second clamping member 720 may be a clamping cylinder or a suction cup. In some specific embodiments of the present invention, the conveying assembly 400 is provided with a photoelectric sensor. When the solar cell A to be tested is conveyed to the position of the photoelectric sensor by the conveying assembly 400, the conveying assembly 400 stops running, and at this time, the clamping cylinder moves to clamp the solar cell A.

[0046] See also Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the transmission assembly 400 includes a plurality of transmission shafts 410, a plurality of transmission wheel groups 420 and a power component, wherein the plurality of transmission shafts 410 are arranged at intervals on the support frame 100 along the first direction; the plurality of transmission wheel groups 420 are arranged one by one corresponding to the plurality of transmission shafts 410, and the transmission wheel groups 420 include a plurality of transmission wheels, and the plurality of transmission wheels are arranged at intervals on the transmission shafts 410. The power component is connected to the transmission shafts 410 in a transmission manner.

[0047] In the above embodiment, the transmission assembly has a simple structure and reliable transmission, and can be used in a dust-free workshop. In addition, the transmission assembly 400 of the detection device 10 has the same structure as the transmission structure of the production equipment, which can reduce the use of spare parts and make the detection device 10 have strong compatibility. Among them, the glass surface of the solar cell A is attached to the transmission wheel, with a large contact area and uniform force, which reduces the deformation of the solar cell A and the occurrence of scratches on the film surface.

[0048] See also Figure 3 As shown, in some embodiments of the present invention, the detection device 10 also includes a positioning assembly, which is arranged on the support frame 100 and located between two adjacent transmission wheel groups 420. The positioning assembly includes a first positioning component 910 and a second positioning component 920 that are axially and relatively arranged along the transmission shaft 410.

[0049] In the above embodiment, the solar cell A can be clamped and returned to the center position by the first positioning component 910 and the second positioning component 920 .

[0050] Please continue reading Figure 5 and Figure 6As shown, in some embodiments of the present invention, the optical assembly 800 includes a camera 810 and a reflector 820. The camera 810 is movably disposed on the support frame 100. The reflector 820 is spaced apart from the camera 810 along a first direction, and the reflector 820 is configured to change the direction of the electroluminescent light of the solar cell A to be tested, so that the light after the direction is changed by the reflector 820 is incident on the field of view of the camera 810. The reflector 820 can help to achieve the shooting of large-size batteries, and in combination with the movable camera 810, the object distance of the camera 810 can be appropriately adjusted, so that the height of the detection device 10 in the vertical direction can be reduced, and the internal space of the detection device 10 can be reasonably used.

[0051] In the above embodiment, the camera 810 may be a line array camera 810, and the reflector 820 may be tilted backward along the advancing direction of the solar cell A at an appropriate angle, such as 45°.

[0052] In a second aspect, an embodiment of the present invention provides a method for using the detection device 10 of the first aspect, which specifically includes the following steps: S100, input the serial number of the sub-cell of the solar cell A in the area to be tested (the positive lead-out cell is numbered 1, the next adjacent sub-cell is numbered 2, and so on, the numbering ends at the negative lead-out cell), and the motor of the conveying component can drive the electrical connection component of the electrical connection component to move to the corresponding sub-cell position according to the relevant program, and respectively correspond to the positive and negative electrodes of the solar cell A to be tested.

[0053] S200, the solar cell A to be tested is transported to the target position by the transmission wheel of the conveying assembly and stops moving, the positioning cylinder of the clamping assembly starts working, clamps the solar cell A to be tested and returns it to the center position, after the positioning is completed, the positioning cylinder shrinks and is in the standby position, waiting for the next work.

[0054] S300, the lifting cylinder of the second driving assembly starts to work, driving the second bearing component of the bearing assembly to move downward until the electrical connection component contacts the film surface of the solar cell A to be tested, and then the second bearing component will move downward again until the cylinders in four directions on the second bearing component clamp the solar cell A to be tested so that it will not slide.

[0055] S400, after the clamping is ready, direct current is passed to the solar cell A to be tested through the electrical connection component of the electrical connection assembly, and the first motor of the first driving assembly drives the first bearing component of the bearing assembly to drive the second bearing component and the solar cell A to be tested to move along the first direction. At this time, the first bearing component and the transmission wheel will keep synchronous movement, and the fluorescence generated by the solar cell A will enter the linear array camera after the propagation direction is adjusted by the 45° reflector of the optical component. After the scanning of the solar cell A is completed, the first bearing component stops moving after reaching the set position, and the transmission wheel will stop synchronously at this time.

[0056] S500, the clamping cylinders at the four positions of the clamping assembly are all released, the solar cell A is placed on the transmission wheel, the second bearing component moves up, the electrical connection component is separated from the film surface of the solar cell A to be tested, the transmission wheel rotates again to transmit the solar cell A out, and the first bearing component returns to the standby position to wait for the next solar cell A to be tested.

[0057] In a third aspect, an embodiment of the present invention provides a solar cell production device, comprising the detection device of the first aspect of the present invention.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An EL detection device for a solar cell, characterized in that: include: A support frame having an input end and an output end arranged opposite to each other along a first direction; A bearing assembly is arranged opposite to the supporting frame along a second direction and is movably arranged relative to the supporting frame, wherein the first direction and the second direction intersect; A first driving assembly, drivingly connected to the bearing assembly; A conveying assembly, disposed on the supporting frame, and configured to drive the solar cell to be tested to move between an input end and an output end of the supporting frame; An electrical connection component is movably arranged relative to the carrying component, and the electrical connection component is configured to supply power to the solar cell to be tested so that the solar cell to be tested emits electroluminescence; A second driving assembly is disposed on the bearing assembly and is drivingly connected to the electrical connection assembly; A clamping assembly, disposed on the bearing assembly, and configured to clamp the solar cell to be tested; An optical component is disposed on the support frame, and the optical component is configured to obtain an electroluminescent image of the solar cell to be tested.

2. The detection device according to claim 1, characterized in that: The bearing assembly comprises a first bearing component and a second bearing component, the first bearing component is movably connected to the support frame, and the second bearing component is arranged opposite to the first bearing component along the second direction; The first driving assembly includes a first driving component and a first lifting component. The first driving component is arranged on the first bearing component to drive the first bearing component to drive the second bearing component to move relative to the support frame along the first direction. The first lifting component is connected between the first bearing component and the second bearing component to drive the second bearing component to move along the second direction.

3. The detection device according to claim 2, characterized in that: The second driving assembly comprises: A guide rod, arranged on the second bearing member; A bracket, movably disposed on the guide rod and connected to the electrical connection assembly; The second driving component is connected to the bracket to drive the bracket to drive the electrical connection assembly to move along the axial direction of the guide rod.

4. The detection device according to claim 3, characterized in that: The electrical connection assembly comprises: An electrical connection component connected to the bracket; The buffer component is arranged between the bracket and the electrical connection component.

5. The detection device according to claim 2, characterized in that: The clamping assembly comprises: Two first clamping members are arranged opposite to the second bearing member in a direction perpendicular to the first direction; Two second clamping components are arranged opposite to the second bearing component along the first direction.

6. The detection device according to claim 1, characterized in that: The transmission component comprises: A plurality of transmission shafts are arranged on the support frame at intervals along the first direction; A plurality of transmission wheel groups are arranged one by one corresponding to the plurality of transmission shafts, the transmission wheel groups include a plurality of transmission wheels, and the plurality of transmission wheels are arranged on the transmission shafts at intervals; A power component is connected to the transmission shaft in driving connection.

7. The detection device according to claim 6, characterized in that: The detection device also includes: The positioning assembly is arranged on the support frame and located between two adjacent transmission wheel groups. The positioning assembly comprises a first positioning component and a second positioning component which are arranged axially and opposite to each other along the transmission shaft.

8. The detection device according to claim 1, characterized in that: The optical assembly comprises: A camera, movably disposed on the supporting frame; A reflector is arranged at a distance from the camera along the first direction, and is configured to change the direction of the electroluminescent light of the solar cell to be tested so that the light after the direction is changed by the reflector enters the field of view of the camera.

9. A method for using the detection device according to claim 2, characterized in that: The steps include: S100, inputting the serial number of the sub-cell of the solar cell to be tested, and the transmission component drives the electrical connection component to move to the corresponding sub-cell position according to the relevant program, and respectively corresponds to the positive and negative electrodes of the solar cell to be tested; S200, the solar cell to be tested stops moving after being transported to the target position by the conveying assembly, and the clamping assembly starts working to clamp the solar cell to be tested and return it to the center position. After the positioning is completed, the clamping assembly is in a standby position, waiting for the next work; S300, the second driving assembly starts to work, driving the second bearing component of the bearing assembly to move downward until the electrical connection assembly contacts the film surface of the solar cell to be tested, and then the second bearing component will move downward again until the second bearing component clamps the solar cell to be tested so that it does not slide; S400, after the clamping is ready, direct current is passed to the solar cell to be tested through the electrical connection assembly, and the first driving assembly drives the first bearing component of the bearing assembly to drive the second bearing component and the solar cell to be tested to move along the first direction, at which time the first bearing component and the transmission wheel will keep moving synchronously, and the fluorescence generated by the solar cell will be scanned and imaged by the optical assembly, and after the scanning of the solar cell is completed, the first bearing component stops moving after reaching the set position, and the transmission assembly will stop synchronously at this time; S500, all the clamping components are released, the solar cell is placed on the conveying component, the second bearing component moves upward, the electrical connection component is separated from the film surface of the solar cell to be tested, the conveying component operates again to transfer the solar cell, and the first bearing component returns to the standby position to wait for the next solar cell to be tested.

10. A solar cell production device, characterized in that: A detection device comprising any one of claims 1 to 8.

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